The Transactions of the Korean Institute of Electrical Engineers B (대한전기학회논문지:전기기기및에너지변환시스템부문B)

The Korean Institute of Electrical Engineers (대한전기학회)
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Self-field Loss Characteristics of a long Bi-2223/AgMgNi Tape

장척 Bi-2223/AgMgNi 테이프의 자기자계손실 특성

  • 류경우 (전남대 공대 전기공학과) ;
  • 박권배 (전남대 대학원 전기공학과) ;
  • 차귀수 (순천향대 공대 전기공학과) ;
  • 최경달 (한국산업기술대 전기전자공학과) ;
  • 이지광 (우석대 공대 전기공학과) ;
  • 한송엽 (서울대 공대 전기공학부)
  • Published : 2000.04.01
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Abstract

The self-field losses in a long multifilamentary Bi-2223/AgMgNi tape with varying transport current, voltage tap configurations, frequency and tape arrangements were investigated. Experimental results show that the measured losses are strongly dependent on voltage gap configurations but independent on tape arrangements. All voltage taps except the center tap are found to agree well with those predicted by Norris for an elliptical conductor. The self-field losses are purely hysteretic in nature in the range of applied frequencies for the transport currents below the critical current.

Keywords

References

  1. H. Ishii, S. Hirano, T. Hara, J. Fujikami, K. Sato, 'The a.c. losses in $(Bi,Pb)_2Sr_2Ca_2Cu_{3Ox}$ Silver-sheathed superconducting wires', Cryogenics, vol. 36, no. 9, pp. 697-703, 1996 https://doi.org/10.1016/0011-2275(96)00055-0
  2. H. Eckelmann, M. Daumling, M. Quilitz, W. Goldacker, 'AC Transport current losses of multifilamentary Bi(2223) tapes with varying filament geometries', Phyhsica C 295, pp. 198-208, 1998 https://doi.org/10.1016/S0921-4534(97)01773-5
  3. L. Jansak, F. Chovanec, J. Kokavec, M. Jergel, 'Critical current anisotropy and AC losses in Bi(Pb)SrCaCuO-2223 and TlBaCaCuO-2212 Ag sheathed superconducting tapes', IEEE Trans. Magn., vol. 32, No. 4, pp. 2788-2791, 1996 https://doi.org/10.1109/20.511453
  4. M. Ciszek, A.M. Campbell, B.A. Glowacki, 'The effect of potential contact position on AC loss measurements in superconducting BSCCO tape', Physica C 233, pp.203-208, 1994 https://doi.org/10.1016/0921-4534(94)00597-4
  5. S. Fleshler, L.T. Cronis, G.E. Conway, and A.P. Malozemoff, 'Measurement of the ac power loss of $(Bi,Pb)_2Sr_2Ca_2Cu_3O_x$ composite tapes using the transport technique', Appl. Phys. Lett., vol. 67, no. 21, pp. 3189-3191, 1995 https://doi.org/10.1063/1.115158
  6. Y. Yang, T. Hughes and C. Beduz, 'Characteristics of the a.c. losses in Ag-sheathed PbBi2223 tapes', Cryogenics, vol. 37, No. 10, pp. 627-631, 1997 https://doi.org/10.1016/S0011-2275(97)00070-2
  7. N. Amemiya, K. Miyamoto, S. Murasawa, H. Mukai, K. Ohmatsu, 'Finite element analysis of AC loss in non-twisted Bi-2223 tape carrying AC transport current and/or exposed to DC or AC external field, submitted to Physica C, 1998 https://doi.org/10.1016/S0921-4534(98)00428-6
  8. 차귀수외 다수, 고온 초전도변압기 개발 중간보고서, 산업자원부, 1999, pp. 22-31
  9. S.A. Awan, S. Sali, C.M. Friend and T.P. Beales, 'Self-field a.c. losses in mono- and multi-filamentary Bi-2223/Ag tapes at power frequencies', Cryogenics, vol. 37, no. 10, pp. 633-635, 1997 https://doi.org/10.1016/S0011-2275(97)00043-X
  10. Y. Iwasa, Case Studies in Superconducting Magnets, New York and London: Plenum Press, 1994, pp.261-265
  11. J. Passi, M. Masti, J. Lehtonen and T. Kalliohaka, 'Frequency dependence of self-field ac losses in Bi-2223/Ag tapes', submitted to mt-16, Ponte Vedra Beach, US, September 26-October 2, 1999 https://doi.org/10.1109/77.828452